Hoisting and launching machinery for life-boats.



B. F. SARGEANT.

HOISTING AND LAUNGIIING MACHINERY FOR'LIFB BOATS.

APPLICATION FILED SEPT. 21, 1912.

Patented July 15, 1913.

5 SHEETS-*SHEET 1.

COLUMNA PLANouRAPn co., wAsHlNu'rON. D. c.

B. P. SARGBANT. HOISTING AND LAUNGHING MACHINERY FOR LIFE BOATS.

APPLICATION IILED SEPT. 21, 1912.

Patented July 15, 1913.

B. P. SARGEANT. HOISTING AND LAUNGHING 'MACHINERY FOR LIFE BOATS. APLIoATIoN HLED SEPT. 21, 1912.

1,067,276. Patented Ju1y15, 1913.

5 SHEETS-SHEET a.

l I I J6 mi COLUMBIA PLANonRAPx-l cu.,w4\sH1NuToN, D. c.

B. F. SARGEANT. 4HOISTING AND LAUNGHING MACHINERY FORv LIFE BOATS.

` APPLIUATION FILED SEPT. 21, 1912. 1,067,276. Patented July 15, 1913.

5 SHEETS-SHEET 4.

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Id ,jt/WM @511 m A Suor/m3 B. F. SARGEANT. HO'ISTING AND LAUNGHING MAGHINBRY PoR LIFE BOATS. APPLIOATION FILED SEPT. 21, 1912.

1,067,276. Patented July 15, 1913.

5 SHEBTS*SHBBT 5.

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BENJAMN F. SARGEANT, OF FORT l/VORTH, TEXAS.

HOISTING AND LAUNGHING MACHINERY' FOR LIFE-BOATS.

Application filed September 21, 15H2.

To all @07mm il' may concern:

lle it known that l, BnNJAMiN F. SAR- oEAN'r, citizen ot the United States, re-

siding at FortV llVorth, in the county of Tarrant and State of Texas, have invented certain' new and useliul Improvements in Hoisting and Launching l/laehinery Jfor Lite-Boats, of which the following is a speciii cati on.

My invention relates to lite-boats and more particularly to mechanism for hoisting lite-boats on a main ship and for lowering the life boats, and the object is to provide eliicient means for quickly and easily lowering life boats from a main ship in case of accident and is particularly adapted for use with such life boats and ships as are illustratedin my co-pending application for lii'e boats which is executed of even date herewith.

Other objects and advantages will be fully explained in the following description and the invention will be more particularly pointed out in the claims.

Reference is had to the accompanying d awings which form av part of this application.

Figure l is a. side elevation of a lite-boat suspended on a main ship which is shown in a broken view, and the hoisting .mechanism is shown in side elevation. Fig. 2 is a broken plan view of the deck ot a. main ship with two lite-boats hung thereoinone on each side, showing on one side a track tor hoisting machinery and on the other side, hoisting machinery mounted on tracks which are attached to the deck oit' the main ship. Fig. 3 a vertical section of a` portion of a main ship and a section oi" the lite-boat carried thereby and showing an end elevation oit the hoisting mechanism. Fig. Ll illustrates a portion ot the .main hoisting shaft with sections ot the main hoisting sprocket wheel and sections oft the rollin.' bearings in the boxes. Fig. is a detail view ci the roller bearings in the main hoisting sprocket wheels. lF G is adetail view of the cap which holds the rollers in place in the wheel shown in Fig. 4t. Fig. :is a detail view of the main hoisting shaft and part ot' the truck. Figs. 8 and 9 are detail views of the rods and chains used in hoisting and lowering or launching the life boats. Fig. l() is a detail view of the center shaft Specification of Letters Patent.

'boats 1 andi 2.

PatentedQluly, 1913. Serial No. 721,553.'

with a portion oit a truck with its brake wheels and brakes and the brake or friction wheel for launching the boat. Fig. l1 is another view of the center shaft, being an end elevation and showing the opijnosite end of the center shaft from that shown in Fig. l0. Fig. 12 is a vertical section of the truck, showing the center shaft complete with all attaclunents. Fig. 13 is a plan view ot the saine, showing also the clutch levers. Fig. 14 is a detail view oit the roller bearing boxes for the main shaft. Figs. 15 and 16 are detailed views ot' the hoisting and launching sprocket wheel and chain. Fig. 17 is a detailed view of the sprocket wheel and its bearing.

Similar characters of reference are used to indicate the same parts throughout the several views.

The principal parts of the hoisting mechanism consist of' tracks on the main ship, one on each side ot' the deck close to the edges, and machinery carrying trucks which run on these tracks. lhe object et the trucks and tracks is to provide for shitting the hoisting machinery to diliierent partsV of the deck of the main ship so that-liiie-boats which are hung on ditlierent parts of the main ship can be hoisted and launched at their proper places. The drawings show only one li'te boat to a side of the main ship andthe life boat is in two parts 1 and 2 hung on the sides of the main ship 3. The truck iscomposed of double side beams 4r, 5, 5 and a single beam (S and a center beam 7 running from end to en d ot' the truck with crossbeams S at the ends and beams 9 intermediate the ends. The truck is provided with wheels l0 and double truck wheels 11. These rnn on tracks l2. The object ol having double beams -l instead et single beams (i and double truck wheels 11 and double tracks 13 therefor is to provide the parts on which the greatest strain will be in hoisting the lite boats and these doubled parts are on the side of the truck next to the lite- ()n oneA side oi the truck the wheels 1() are provided with shafts which are journaled in the beams 5 and@ and on the other side ofthe truck the wheels l1 are provided with shafts which are jour'- naled in heamst and 5. Each truck is provided with four main hoisting shafts 14 which are journaled in boxes 15, ltfand 17. The boxes 15 are attached to the beams 4 and 5 which are on the side of the truck next to the life boat. The boxes 16 are attached to beams 7, and boxes 17 are attached to the beams 5 which are adjacentto beams 6.

A center shaft 18 is ournaled in boxes 19 which are attached to beams 4, 5, 6, and 7. A main drive wheel 2O is loosely mounted on the main driving shaft. The wheel 20 is driven from the reversible engine 21 by means of a sprocket wheel 22 which is rigid with the engine shaft 23 and by a sprocket chain 24. The wheel 2O is locked to the shaft 18 for driving purposesLby a clutch 25 which moves on a key 26 and the clutch 25 is actuated by a lever 27 which is fulcrumed on a short beam 28 which is attached to beams 5 and 7 and the lever is pivotally connected with the clutch 25. Vhen the wheel 2O is locked in operative position, it drives the shaft 18 and the shaft 18 drives a double sprocket wheel 29. The wheel 29 drives the sprocket chains 30 and 31 and these chains drive sprocket wheels 32 and 33 which drive the shafts 34 and 35. Shaft 34 is provided with a pinion 37 which drives a cog wheel 36 which is rigid with shaft 39 and also drives a cog wheel 38 which is rigid with a shaft 40 which drives a pinion 41 and pinion 41 'drives a cog wheel 42 which is rigid with the hoisting shaft 14. Shaft 39 drives a pinion 43 and pinion 43 drives a cog wheel 44 which is rigid with another hoisting shaft 14. The object of the shafts 39 and 40 and the gearing operating therewith is to drive the two shafts 14 in the same direction. The shaft 35 drives a pinion 45 which is rigid therewith and pinion 45 drives cog wheels 46 and 47. Cog wheel 46 drives shaft 48 and pinion 49 which is rigid therewith and pinion 49 drives cog wheel 50 which is rigid with shaft 14. Cog wheel 47 drives shaft 51 and pinion 52 which is rigid therewith and pinion 52 drives cog wheel 53 which is rigid with another shaft 14. Vith the gearing thus shown together with a reversible engine the hoisting shafts 14 can be drive-n in either direction for hoisting or launching the life-boats. Sprocket Wheels 54 are mounted on the shafts 14 and locked thereto by roller bearing keys 55 or keys which have bearings 56. The shaft 14 has a swell 57 and four slots 58 are made in the swell 57 and the rollers 56 run in the slots 58. The wheels 54 are made in two parts and the parts are attached together by bolts 59. Each part of the wheel carries one-half of each tooth. By making the wheel in two parts the keys can be set in the cavities within the wheel hub. One part of the wheel is put on the swell. Then the keys are set in the half hub with the rollers 56 in the grooves 58. The other half of the wheel 54 is then put on the swell 57 and the bolts 59 are then used to bind the two parts together. The wheel cannot be removed without taking out the bolts 59. lVith this construction, the wheels 54 can be inclined as may be necessary in launching` or hoisting a life boat. (See Fig. The keys 55 are dovetailed on two sides so that they will not drop toward the bottom of the slots 58. The keys 55 have spindles 60 and the roller bearings 61 are mounted between the circular band or roller 56 and the spindle 60 and a cap 62 is attached to the spindle 60 to inclose the roller bearing 61. Sprocket chains 63 are nounted on the wheels 54 and the chains are heavy enough to prevent displacement of themselves during operation. The chains 63 have bars 64 attached to their lower ends and lever hooks 65 are fulcrumed in hangers 66 which are attached to the bars 64. Eyes 67 are attached to the life boats 1 and 2 to be engaged by the hooks 65.

Referring to the center shaft 18 (see Fig. 15), a cog wheel 68 is loosely mounted on the shaft 18 and is locked thereto for driving purposes by a key 69 which is rigid with the shaft 18. The wheel 68 is for the purpose of driving the cog wheels 70 and 71 and this is done through a cog wheel 72. rlhe. wheel 68 is moved axially to be thrown in and out of mesh with the wheel 72. The wheel 68 has a flange 73 and a lever 74 is pivotally connected to a yoke which engages the Hange 73 for movement of the wheel 68. The wheel 72 is provided with a shaft 75 which is journaled in bearings which are attached to beams 5 and 6. The wheels 70 and 71 on one side of the truck are rigid with the truck wheels 16. Thus the power of the center shaft is transmitted t'o the truck through the wheels 68, 72, and 70 and 71. The other side of the truck has similar wheels 68, 72, and 70 and 71, the wheels 70 and 71 being rigid with the truck wheel shaft 76 which is journaled in boxes 77 attached to the bottom parts of the truck beams 4, 5, 6, and 7. By the gearing thus described the trucks are run back and forth on the tracks of the main ship. Vlhen the trucks have been positioned for hoisting or launching purposes, the wheels 68 must be thrown out of mesh with the wheels 72 by the levers 74 so that the trucks will not move during a launching or hoisting operation, it being necessary to drive the center shaft 18 for driving the hoisting mechanism. For a similar reason the hoisting mechanism must be ungeared from the center Yshaft while the trucks are being moved. For the purpose of ungearing the hoisting mechanism a lever 78 is used to throw the double sprocket wheel 29 in and out of gear. A clutch 79 is formed on the hub of the brake wheel 80 and a coperating clutch 81 is formed on the hub of the sprocket wheel 29. Then the clutch on the hub of wheel L9 is thrown out ofinesh with the clutch 79 on the hub-offthe brake wheel 80, the hoisting mechanism willnot be` driven by the center shaftv 18.v

The brake wheel 8O is principally for" yfor'lifeboats comprising a track mountedon the deck of a main ship, a truck adapted to controlling the launching ofthe life boats.

lVh'en the double sprocket wheel 29 is geared to the brake wheel 80, thebrake wheelcan control'the speed of the hoisting mechanism and consequently the descent of the life boats. Brake shoes 82 aie inountediii position to bear against the periphery of the brake wheel 80. Posts 83 are mounted on the truck frame. Longitudinal beams 84 are attachedto the posts 83 and short cross beams 85 are mounted on the beams 84E.` Links 8Gl are swingingly mounted oir the beams 85 and pivotally connected to the brake shoes 82 for suspending the brake shoes. Similar' links 87 are pivota-lly connected to the lower sides of the brake shoes 82 toprevent upwarddisplacement of 'the brake shoes andtliese links 87 are swingiiigly connected to beams 88 which-are connected to beams 89 which are attached to the bottom of the truck frame. The brake shoes 82 are operated by brake levers 90. Af hand wheel 91 is loosely mounted enthe center shaft 18 and link bars 92 are eccentrically connected to the wheel 91 and pivotally connectedto the levers 90. The hand wheel-91- is thus used to control the launching of the life boats. A brake mechanism is also provided for the truck. Brake shoes 93 are suspended to engage the wheels 11 by hangers 94 which are loosely mounted on the center shaft 18, and pivotally connected to the brake shoes 98. A lever 95 is fulcrumed on one hanger 9/-t and a liandwheel 9G is loosely mounted on lthe center shaft 18. A link bar 102 is pivotally connected to the lever 95 and to the wheel 9G. A stirrnp 97 is pivotally connected to the short arm of the lever 95 and engages a cam lever 98, the stiriup 97 having an antifrictioii roller 99. The cani lever 98 is pivotallv connected to one brake shoe 93 and has a cani which bears against a roller 100 mounted in the other brake 93. The lever 98 has a cani 101 which bears against the roller 100. By the mechanism thus described the hand wheel 9G can be used to operate the truck brakes.

A crab 120 for hoisting with a rope or cable is mounted on the center shaft 18 for general hoisting purposes, as packages of goods, or even a person. This crab is also operated by the center shaft 18. It will thus be seen that the center shaft is the most important feature of the operating mechanism, because it drives the launching and hoisting shafts in either direction and carries clutch mechanism for connecting and disconnecting the center shaft from the hoisting and launching' shafts. This center shaft 18 also carries gearing for driving the truck gearing and clutclr mechanism for connecting and disconnecting the gearing on the center sha i't `to and from the truck gearing.

I claim 1. A hoisting and launching mechanism i'un on saiditrack, a'plurality of launching and hoisting shafts journaled in said truck, gear wheels mounted on saidshafts and each shaft having a globe bearing and a sprocket wheel mounted thereon, operative connections coperating with said gear wheels, a central operating shaft for driving said hoisting and launcliing shafts'in either direction, and a brake wheel mounted on said operating shaft for controlling the movement of said hoisting and launching shaft.

2. A hoisting and launching mechanism for lifeboats comprising a wheeled truck-foi' moving' on the deck of a main ship, hoisting and launching shafts journaled in said truck, a central operating shaft, means for driving said shaft` gearing foi' connecting said shaft with said hoisting and launching shafts, means for shifting the operation of said operating shaftfrom the truckdriving gear to said hoisting and launching driving gear, each hoisting and launching shaft having a. sprocket wheel mounted thereon and a bearing permitting the driving of the sprocket wheel at different inclines, and sprocket chains and hooked bars coperating with said gear wheel.

3. A hoisting and launching mechanism for lifeboats comprising a wheeled truck for moving on the main deck of a main ship, a plurality of hoisting and launching shafts journaled in said truck, a cent-ral operating shaft for driving the truck and for driving said hoisting and launching shafts, means for shifting the operation of said central shaft from operating the truck to operating the hoisting and launching shafts, each hoisting and launching shaft having a globe bearing and a sprocket wheel mounted on said globe bearing.

4t. A hoisting and launching mechanism foi' lifeboats comprising a wheeled truck for moving on the decks of a main ship, a plurality of hoisting and launching shafts journaled in said truck, means for driving said shafts carried on said truck, each shaft having a slotted globe bearing, a sprocket wheel mounted on each globe bearing, and roller bearings carried in the inner face of the sprocket wheel and projecting in the slots in said globe bearing.

5. A hoisting and launching mechanism for lifeboats comprising a wheel truck for moving on the deck of a main ship, a plurality of hoisting and launching shafts journaled in said truck, means for driving said shafts, each shaft having a slotted globe bearing, a sprocket wheel in two parts mounted on said hearing, roller bearings carried in the inner face of the hub of said sprocket wheel and projecting into said slotted hearing, and a sprocketI chain and a hooked bar coperating with said sprocket wheel.

G. A hoist-ing and launching mechanism for lifeboats comprising a wheeled truck for moving on the deck of a main ship, driving gear for said truck, a plurality of hoisting and launching shafts jonrnaled in each end of said truck, each shaft having a globe hearing and a sprocket wheel mounted thereon, a central operating shaft journaled in said truck, gearing connecting said operating shaft with the shafts on each end of said truck, means for throwing said gearing into and out of operative connection with said hoisting and launching shafts, means for Conneetino` said operating shaft with the truck gearing, neans for throwing the operating shaft into and out of operative conneetion with the truck gearing, and a brake wheel mounted on said operating shaft for controlling the movement of said hoisting and launching shafts.

7. A hoisting and launching mechanism for lifehoats comprising y a wheeled truck for moving on the deck of'a main ship, driving gear for said truck, a plurality of hoist- Ving and launching shafts journaled in each end of said truck, each shaft having a globe hearing and a sprocket wheel mounted thereon, a central operating shaft journaled in said truck, a gearing connecting said operating shaft with the hoisting and launching shafts on each end of said truck, means for throwing said gearing into and out of operative connection with said hoisting and launching shafts, means for connecting said operating shafts with the truck gearing, means for throwing the operating shaft into and out of operative connection with the gearing mounted on said operating shaft, a brake wheel mounted on said operating shaft, brake shoes swingingly mounted on the truck frame, and adapted to engage the periphery of said hrake wheel, and brake levers and a hand wheel mounted on said operating shaft and cooperating with said brake lever for controlling said brake shoes. 7

In testimony whereof, I set my hand in the presence of two witnesses, this 13th day of September, 1912.

B. F. SARGEANT.

Vitnesses A. L. JACKSON, L. T. KNIGHT.

Copies Commissioner of Patents,

Washington, D. C. 

